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Date:      Sat, 16 Apr 2005 00:52:49 +0200
From:      Pawel Jakub Dawidek <pjd@FreeBSD.org>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/vm vm_pageq.c
Message-ID:  <20050415225249.GL837@darkness.comp.waw.pl>
In-Reply-To: <200504152145.j3FLj2Oi004736@repoman.freebsd.org>
References:  <200504152145.j3FLj2Oi004736@repoman.freebsd.org>

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On Fri, Apr 15, 2005 at 09:45:02PM +0000, John Baldwin wrote:
+> jhb         2005-04-15 21:45:02 UTC
+>=20
+>   FreeBSD src repository
+>=20
+>   Modified files:
+>     sys/vm               vm_pageq.c=20
+>   Log:
+>   Add a vm.blacklist tunable which can hold a space or comma seperated l=
ist
+>   of physical addresses.  The pages containing these physical addresses =
will
+>   not be added to the free list and thus will effectively be ignored by =
the
+>   VM system.  This is mostly useful for the case when one knows of speci=
fic
+>   physical addresses that have bit errors (such as from a memtest run) so
+>   that one can blacklist the bad pages while waiting for the new sticks =
of
+>   RAM to arrive.  The physical addresses of any ignored pages are listed=
 in
+>   the message buffer as well.

Nice. Would be good to have it documented somewhere, not sure where...

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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